5
system adopts direct water supply from tap water as shown in Fig. 1-B, then this terminal is connected
to the normally open contact of the pressure switch of low feed protection, and it will close when
water pressure is normal.
5---terminal of external operation switch of controller ,ECS (the system operates when it is switched
on ). The ECS switch may be controlled by the key switch installed on the cabinet panel, if a key
switch is not used, please connect terminal 5 and 8 in short circuit.
6---Reset signal, may be connected to a reset button on the cabinet panel, used for reset of high and
low pressure alarms.
8--- a common terminal used jointly by the detection signals of terminal 1,2,3,4,5 and 6.
Terminals from left to right in the middle:
22---input wire of conductance electrode (green wire)
23---input wire of conductance electrode (red wire)
25---input wire of conductance electrode (white wire)
26---input wire of conductance electrode (yellow wire)
Rest terminals including terminal 7, 17,18,19,20,21,24 are not internally connected.
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